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LTC3111 - 1.5A Synchronous Buck-Boost DC/DC Converter

General Description

The LTC®3111 is a fixed frequency, synchronous buckboost DC/DC converter with an extended input and output range.

The unique 4-switch, single inductor architecture provides low noise and seamless operation from input voltages above, below or equal to the output voltage.

Key Features

  • n Regulated Output with VIN Above, Below or Equal to VOUT n 2.5V to 15V Input and Output Voltage Range n 1.5A Continuous Output Current: VIN ≥ 5V, VOUT = 5V, PWM Mode n Single Inductor n Accurate RUN Threshold n Up to 95% Efficiency n 800kHz Switching Frequency, Synchronizable Between 600kHz and 1.5MHz n 49µA No-Load Quiescent Current in Burst Mode® Operation n Output Disconnect in Shutdown n Shutdown Current < 1µA n Internal Soft-Start n Small, Thermally Enhanced 14-Lead (3mm × 4mm.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FEATURES n Regulated Output with VIN Above, Below or Equal to VOUT n 2.5V to 15V Input and Output Voltage Range n 1.5A Continuous Output Current: VIN ≥ 5V, VOUT = 5V, PWM Mode n Single Inductor n Accurate RUN Threshold n Up to 95% Efficiency n 800kHz Switching Frequency, Synchronizable Between 600kHz and 1.5MHz n 49µA No-Load Quiescent Current in Burst Mode® Operation n Output Disconnect in Shutdown n Shutdown Current < 1µA n Internal Soft-Start n Small, Thermally Enhanced 14-Lead (3mm × 4mm × 0.75mm) DFN and 16-Lead MSOP Packages APPLICATIONS n 3.3V or 5V from 1, 2 or 3 Li-Ion, Multiple-Cell Alkaline/NiMH Batteries n RF Transmitters n Military, Industrial Power Systems LTC3111 15V, 1.